Structure
This article illustrates the inner structure and organization of the elements which build the RadTrackBar control.
Figure 1: RadTrackBar's elements hierarchy
Figure 2: RadTrackBar's visual structure
Here is a brief explanation of the various elements in the tree:
The RadTrackBarElement represents the entire RadTrackBar control. It contains two instances of TrackArrowButtons that represent the handlers (buttons) and the TrackBarBodyElement.
TrackBarBodyElement wraps and arranges TrackBarScaleContainerElement and TrackBarIndicatorContainerElement.
TrackBarScaleContainerElement wraps and arranges the TrackBarScaleElement and TrackBarLineElement.
Each instance of TrackBarScaleElement contains its own set of TrackBarTickContainerElement and TrackBarLabelContainerElement that generates and arranges the ticks and labels respectively.
TrackBarIndicatorContainerElement generates and arranges the TrackbarIndicatorElements according the mode of RadTrackBar and the content of the Ranges collection. This class creates a connection between the logical TrackBarRange and its visual representation - TrackBarIndicatorElements.
TrackBarIndicatorElements represent a set of TrackBarThumbElement and TrackBarRangeElement. This set represents two thumbs and a line between them.